What bacteria is this???
Gram negative
Methyl Red: Negative
Voges-Proskauer: Negative
Hydrogen Sulfide Production (Peptone Iron): Negative
Gelatin Hydrolysis: Positive
Glucose Utilization: Positive
OF-Glucose: Oxidizer
Starch Hydrolysis: Negative
Motility: Positive
Special Feature: Green-Blue Color in Culture
MICROBIOLOGY BACTERIA QUESTION???? What bacteria is this??
Pseudomonas aeruginosa. The green-blue color is caused by two pigments, fluorescein and pyocyanin, that are produced. It is Gram negative, motile by a polar flagellum, and does utilize glucose, but by respiration rather than by fermentation, which explains the negative results for both the methyl red and the Voges-Proskauer tests. If you grow it on blood agar in pure culture, and sniff the colonies (don't touch them!), you should notice an odor which smells like corn tortillas. I always used that odor to help me in my identification of this pathogen.
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